Brush machine



C. JOBST BRUSH MACHINE March 26, 1929.

11 Sheets-Sheet Filed Jan. '7, 1922 ame/wko@ IIIIIIIIIIIII C. JOBST March 26, 1929.

BRUSH' MACHINE 4 Filed Jan. v 1922 l 1'1 sheets-sheet 2' Marrch 26, 1929. c. JoBsT BRUSH MACHINE Filed Jan. '7, 1922 1l Sheets-Sheet 3mm/nto@ Copra a? Jb 22s s S o JoBs-rv- BRUSH MACHINE March 2 6, 1929.

Fiied Jan. v7, 1922 11 sheets-sheet 4 Cpnra d Jobs March 26, 1929. c. JoBsT BRUSH MACHINE Filed Jan. '7, 1922 11 Sheets-Sheet DN mw BRUSH l MACHINE Filed Jan. '7 1922 11v Sheebs-Sheel me/who@ C on :fa Jobs t March 26, 1929. la. JoBsT 1,706,450

` v BRUSH MGHINE Filed Jan. '7, 1922 -11 Sheets-Sheet 7 c. JOBS-r BRUSH MACHINE March 246, 1929.

Filed Jan. v, '-1922 11 sheets-'snm sr &// 1.-.: MM/f, W, M n :www:

. gmc/Wto@ Carfsz ci. d s

C. JOBST March 26, 1929.

BRUSH MACHINE Filed Jan. 7, 1922 [Wren-far (fr a? Jobst March 26, 1929. c. JOBST .BRUSH MACHINE Filed Jan. '7, 1922 11 Sheets-Sheet 10 March 26, 1929. c. JQBST BRUSH MACHINE Filed Jan. v, i922 ll Sheets-Sheet 1l NNY Patented Mar, 26, 1929.

UNITED STATES` CONRAD JOBST, OF TOLEDO,

LEDOl AUTOMATIC BRUSH 'MACHIE COMPANY,

OHIO, ASSIGNOR', BY MESNE -ASSIGNMENTS, TO THE TO- OF TOLEDO, OHIO, A CORPORA- BnUsH MACHINE. y

Application led January 7, 1922.V Serial No. 527,590.

The invention relates to brush machines of that type in which a number of the operations for the forming of the complete brush are automatically performed in a single machine.

Such operations may include the feeding of the bristle stock, the picking of the tufts from the stock, the feeding of wire and the forming of staples therefrom for` securing the tufts, the boring of the brush back and t e setting of the tufts therein, this including the engagement of the staple with the tuft, the

forcing of the same through a nozzle,` and the registration of the nozzle with the bored brush back. The machine may also -include -apalr of holders for Ithe brush backs which are simultaneously and correspondinglyadjusted,-

with the boring mechthe one in registration the tuft-setting anism and the other with mechanism, the arrangement being such that in each cycle of operation, one brush back is completely bored and the previously bored back has the tufts set therein.

Among the objects of the invention are:

first, to simplify the construction; second, to

secure a high degree of accuracy-in the performance of the work; third, to attain high speed in production; fourth, flexibility or capability of adjustment by which a large variety of work can be produced on the same machine; fifth, ease in adjustment and repairs. These objects are attained; rst, by forming the machine of a plurality of units, each of which is complete in itself and can be separately assembled and easily attached or detached from the main machine; second, by

employing'as a driving and timing mechanism a simple harmonic movement, largel ,j

eliminating cams and associated parts, whic third, by instantaneous and positive control in the stopping of the machine at the completion of its cycle, which avoids destroying or injuring the work just completed; fourth, by

utilizing the portions of the harmonic cycle of lowest velocity for impact operations, such as the forming of the'staple, picking of thcl tuft and the depositing of the same in registration with the setting mechanism, while the high speed portions of the cycle are utilized in transporting the parts from one position to another, thereby attaining high speed in production; fifth, by various ufeatures of construction as will be hereinafter set` forth.

are the cause of trouble in most machines; 4

The present application forms a continuaion inpart of any previously filed applicaion. f l

In the drawings:

Figure 1 is a sectional elevation of the machine looking from the front side;

Figure 2 is a similar view from the rear s1 e; L

Figure 3 is a plan view partly in horizontal section;

Figure 4 is a sectional elevation showing the bristle magazine and tuft picking unit;

Figure 48L isl a cross section on the line 4**--4b of Figure 4.

Figure 5 is a sectional plan view of the tuft setting unit;

Figure 6 is a through;

Figure 7 isa sectional elevation of the work holders;

Figures 8 and 9 are horizontal sections viewed from the bottom and respectively on lines 8-8 and 9-9 of Figure 7 Figures 10, 11, 12 and 13 are vertical cross sections'respectively on lines 1010, 11-11, 12-12 and 1 3-13 of Figures 5 and 6;

Figure 14 is a cross-section substantially on line 14-14 of Figure 4;

Figure 15 is a horizontal sectionon line 15--15 of Figure 14;

Figures 16, 17 and 18 are sectional elevations of a portion of Fig. 4, showing the parts in different positions;

Figure 19 is a sectional plan view of Fig. 4; Figure 20 is a perspective view of the tuft picking mechanism;

Figure 21 is a cross-section on line 21-21 of Figure 16;

Figure 22 is a vertical section on line 22-22 of Figure 4; e

Figure 23 is an enlarged sectional plan view of the tuft-setting unit;

longitudinal section theretion therethrough;

Figure 25 is a section on line 25-25 of Fig. 23;

Figure 26 is an end elevation of the same. Figure 27 is a perspective view\of the staple forming mechanism with parts broken away. The several units which together form my improved machine are: First, the bristleand deliveringmechanism; third, the tuft Figure 24 is an enlarged longitudinal seci 'feeding mechanism; second, the tuft picking i required lead and and registering mechanism'including a plurality of work holders which are synchronously and Acorrespondingly operated to register the brush backs with the boring mechanism, tuft setting mechanism and with any other mechanism for performing operations thereon. These units are driven and timed from a common mechanism, but they are not so inter-related as to be dependent for the performance of their several functions upon any other of the units. Also, as has been previously stated, thevuse of cams 1s largely avoided and a simple harmonic movement is substituted therefor.

In general construction, 1 is a `frame preferably in the form of a' pedestal, on the upper portion of which is mounted the shaft 2 which is driven by the pulley 3 from a suitable source of power such as the electric motor4 and belt 5. Each revolution of this shaft completes a cycle of picking and setting a tuft, while the greater cycle for'forming a 4brush is variable and is vcontrolled by the starting and stopping of the mechanism. The shaft 2 is formed with a pair of cranks or eccentrics, which are of unequal throw and are also angularly displaced in relation to each other. As shown, these cranks are formed by a disk which is at vthe end of the shaft 2 having the crank pin 7 secured thereto with an angular extension 8, which carriesy a second crank pin 9 of lesser throw. The angular displacement is formed by turning the shank 10 of the pin 7 to carry the pin 9 the required number of degrees, preferably 12%", in advance of the in 7, and the parts are fixed in this relation E suitable means such as the spline 11 on the shank 10 of the pin. Centrally arranged upon the shaft 2 is transmission for driving the synchronously and correspondingly operated work holders. 42

This preferably consists of a helical gear havinga portion 13 of its circumference of the parallel overlapping portions 14 and 15 of zero lead. This gear intermeshes with a pin gear 16 havin involute teeth which engage with the helix, stationary while traversing the portions 14 and 15 thereof and being driven rotatively in traversing the portion 13. The gear 16 is mounted upon a shaft '17 which extends obliquely downward and is connected by the Worm 18 and worm wheel 19 to a transversely extending shaftv 20. Upon the shaft 20 is mounted a cam wheel carrying a pair of cams 22 and 23, the function of which will be hereinafter explained. The shaft '\2 has also mounted thereon a cam 24 which directly actuates the drilling mechanism.V

Al of the various units of the machine are actuated and timed by this simple drive mechanism just described, and the arrangement is such that the mechanisms driven by the cranks' A 7 and 9 have all impact operations performed in the portions of the cycle adjacent to the parallel side members 30 and 31.

an intermittent step-down bristles and eing held dead centers thereof, while operations of translation are the cycle having highervelocity. Basile feeding ima.-

25 is an upwardlyextending portion of the frame, which is provided with two laterally extending studs 26 and 27. Upon these studs is mounted, preferably in inclined position, the bristle holding receptacle, which comA prises top and bottom members 28 and 29 and The latter are provided with lugs or bosses 32 which are sleeved upon the studs 26 and 27 and are secured in different positions of adjustment by set-screws 33. The 'form of the receptacle is preferably aringfrom its upper towards its lower end, the side plates 30 and 3l being set for the various lengths of bristles used and the body of bristles being fed downward by a follower 34. The latter is mounted upon a shank 35 which passes through a spring housing 36 and is provided at its upper end with an operating handle 37. The follower is also provided with bifurcated projections 34a and 34b respectively embracing the top and bottom members 28 and 29. 38 is a spring sleeved upon the shank, one end abutting against the outer end of the housing and the opposite end against the follower. Thus a yielding pressure is placed upon this follower, which will feed the bristles downward` and at any time when it is desired to refill, the follower Inay be retracted by the handle 37, a latch 39 engaging a notch in V,the shank serves to hold the follower in itsouter position during the loading of the receptacle.

To provide access'to the receptacle, a portion 40 of its top wall is hinged at 41 and is normally held in position by a latch keeper having an operating handle 43. When this latch is released, the member 40 may be turned up, permitting the insertion of the the filling of the receptacle therewith. At the lower end of thev receptacle there is arranged anobliquely inclined mem` ber 44, which forms a tapering or wedgeshaped space at the apex of which the bristle picking mechanism is located. This member 44 is reciprocated during the operation of the machine and in its forward movement permits the whole body of bristles to be fed forward and downward, While in its rearward movement the bristles Vin the wedge-shaped space are pressed downward so as to render the density substantially uniform. Thus the function of the parts thus far described is to feed the body of bristles to the apex of the wedge-shaped space and into operative rela- Taft pick/ng and delivering mechanism.

Upon the portion 25 ofi-'the frame is mounted a vertically extending guide-way 45, in

performed in the portion of llO which are arranged a pair of reciprocating slides 46 and 47 The slide 46 has projecting therefrom a pin 47:1L which is engaged by a slotted bearing 48 in a bell crank lever 49. The actuating arm 50 of this bell crank lever extends downward and is connected by a link 51to the pitman rod 52 actuated by the crank pin 7. Thus in each cycle of the crank shaft 2 a reciprocatory and substantially harmonic movement is imparted to the bell crank lever 49, which in turn actuates the slide 46. The slide 47 is indirectly actuated from the slide 46 and with a lost motion and resiliently yieldable connection. This comprises a laterally extending finger 53 rigidly secured to the slide 47 and extending into a slot in the slide 46. In this slot is the spring 54 having the plunger 55 on which it is sleeved, and said plunger is pressed by the spring against the finger 53.l Upwardmovement of the slide 47 in its guide 45 isllinited by an adjustable stop 56 and movement of the slide 47 relative l t the'slide 46 during the downward movement of the latter is limited by the adjustable stop 5,7. Thus, when actuated by the lever 49, the slide 46 will first move in a downward direction, while the slide 47 is held stationary against the stop 56, but .upon contacting of the stop 57 with the finger 53, both slides will move together to the completion of their downward movement.

The picking .of the tuft is accomplished by a pair of cooperating picking needles, carried respectively by the'slides 46 and 47, in conjunction with the reciprocating member 44 and other elements, which will be presently described. The all-essential feature in the successful picking of a tuft is to obtain tufts' ofl uniform volume in successive operations and to separate such tufts from the mass and transfer them to the settmg mechanism w1thout injury to the bristles. In the rapid operation of the machine the engagement of the picking needles with the bristles forming the tuft must be accomplished in the brief interval between the rising ofthe needle above the stock and the subsequent descent thereof.

If the needles were moving at uniform velocity, this interval would be very short, but by reason of the harmonic movement, the rise of the needle above the. stock is during the passage over the dead center. Thus, from twenty to forty degrees of the cycle is occupied b v this portion of the movement.

Another difficulty in obtaining tufts of uniform density and volume is due lto the inertia and friction factors; Therefore, if the bristles are pressed from onev direction only into engagement with the needles, there will be a lack of uniformity, but this is largely overcome by pressing from transverse'directions. iVith my improved mechanism the portion of the body of bristles from which the tuft is separated is subjected to pressures in transverse directions in advance of the the picking separation by the picking needle, which insures a full volume of bristles in each tuft.

In detail, the bottom memberf29 of the bristle receptacle is preferably provided with a Shorthorizontal portion 58 adjacent to the apex of the wedge-shaped space, which portion terminates in the vertically extending guide-way 59. Carried by the bifurcated parts 61 and adapted to be brought into registration with the guideway 59 is a guide 60 which through the adjustment of part 44 at 76 may vary the space between the same and the guide-way 59. The member 44 is also provided With a vertically extending portion 61 which is complementary to the guide-way 60 and overlaps the same but is movable relative thereto in the reciprocation of said member. The guide-ways 59, 60 and the extending portion 61 are vertically slotted for the passage of the picking needles 62 and 63 that are respectively carried by the slides 46 and 47. Also, the portion 58 is centrally slotted for the passage therethrough of a presser point 64 which is carried by a reciprocating member 65 arranged beneath the receptacle. The arrangement is such that the forward ward movement of the member 44, previously described, will enlarge the space for the bristles adjacent to the picking needles, so that a forward movement of the presser point 64 will carry the bristles into such enlarged space. On the return movement of the member 44 pressure is exerted by the inclined face 66 thereof both downward and rearward upon the bristles and in opposition to the pressure from the point 64 forming in effect a closing in of the space from the sides and top against the bottom 58. This will give the required density to the bristles or, in other words, will completely fill the space with the same so that the descending picking needles will separate a tuft of exactly predetermined dimensions.

The picking needles 62 and 68 are so fashioned as to completely surround the tuft after of the same and during its transfer downward between the guides 59 and 60. To this end the needle 63 is provided with a hook or shoulder 67, which, when the slide 47 is at the upper limit of its movement, is in alignment with the portion 58. The shank portion of this needle extends upward to the slide 47 and is pivotally attached thereto at 68. 69 is an arm or finger extending laterally from the needle above the pivotal point, and

70 iS a screw carried by the slide 47 forming an adjustable stop for said finger. 71 is a spring pressing against the shank of the needlel to yieldably hold the'same against i the stop 70. On the guide 45 is placed a cam viously described. This reciprocation is ef- Cil fected by a connection to the bell crank lever 49, which, as shown, comprises a slotted link engaging a pin 76 projectingfrom said lever. The opposite end of the link 75 is y pivotally attached to a lever 77 and the opposite end of this lever is pivotally-attached to the member 44. -78 is a friction bearing for the lever 77 Which is under the yielding pressure of a spring 79 sleeved upon thefulcrum pivot 80, and the arrangement is such that the lever, after actuation bythelink 75 at one end of its stroke, will remain stationary until the lost motion is taken up by said link in its return movement and it is again actuated in the opposite direction. The lower end of the member 44 is bifurcated to embrace the needles 62 and 63 and also a stationary bearing 81 projecting upward from the guide 60. vThe member 44 is further guided upon a pin 82 which engages slotted bearings in the furcations of saidmember and this pin is vertically adjustable, preferably by mount- -ing it upon an eccentric 83 rotatively mounted in the bearing 81. The eccentric may be adjusted by a milled heat 84, and a set-screw 85 is provided for holding the parts in any position of adjustment. v

The presser point 64 carried by the reciprocating member 65is actuated by a reciprocating slide 86, which is mounted in guide- Ways `87 on the portion of the frame 252 The slide 86 inturn is' actuated by a slide 88 arranged beneath the same, which`latter slide is actuated by a pin 89 coupled to the pivotal connection of the pitman 52 and -link 51. Thus the slide 88 will reciprocate the full stroke of the pitman, but the slide 86 is only7 actuated at the opposite ends of said stroke by a'lost-l'notion connection between the same and the slide 88. This lost-motion connection consists of a finger 90 projecting downward from the slide 86 through a slot in the guide-way therefor, which finger lies in the 'path of yielding bulnpers 91 and 92 on the Slide 88. y 93 and 94 are springs for the bumpers 91 and 92 which abut against the threaded bushings 95 and 96. Therefore, at each end of the stroke of the pitman and slide 88,`

movement is transmitted through the bumpers and finger 90 to the slide 86. Upon this slide 86 is a pivot pin `9,7 forming the connection between the same and the member 65 by which the movement is transmitted to the presser point 64. It is, however, necessary that the point 64 should be moved upward into engagement with the bristles before the forward movement ofthe point and also withdrawn from the engagement with the bristles before the return movement thereof. This is accomplished by a rock arm 98 connected to'the member 65 and engaging a cam 99 on the slide 88. The cam is so fashioned that-the arm 98 will be raised and lowered at the proper times to effect the insertion and withdrawal of the presser pin 64.

Taft setting' unit.

moved forward into contact with the brush back and in registration with the bore for receiving the tuft. The unit also includes a staple-forming mechanism and an inserter which actuates the formed staple to engage the same with the tuft and then to deliver tuft and staple into the bore of the brush back. Another element of the unit is a shield or deflector which is carried in operative relation to the nozzle and which functions to press a previously set tuft out of the way when a new tuft is to be inserted. Finally the unit is associated with a wire-feeding mechanism which supplies the Wire for forming the staples. In structure the unit com` prises a-housing or guide-way 100 containing four'slides 101, 102, 103 and 104. The slide 101 is actuated by a pin 105 extending through a slot in the housing and connected to the pitman 106 which engages the crank pin 9 having the smaller throw. The slide 103 is actuated by the pin 89, previousdw described, as operating the slide 88. This pin 89 isi'ixedly secured to the slide 103 and during the assemblyof the unit with the other units of the machine may be inserted through the hollow pivot bushing 107 connecting the pitman 52 to the link 51. The pin 89 travels through a slot 108 in the housing and for 4the full stroke of the large throw crank 7.

Between the slides 101 and 102 is arranged the staple-forming mechanism and also the inserter, which latter is actuated by the slide attached to said slide.

I103. The wire for forming the staple is fed vertically upward through a guide-way 114 see Figure 1) secured to the housing 100 and t rough a recess between the slides 101 and 102 of substantially the width of the wire. Projecting into this recess from the slide 101 and in rear of the wire is the staple former 115, which is bifurcated to receive staple therebetween. Cooperating with the former is the core or anvil 116 which is at the end of a pin 117 passing through the slide 102 and through the recessed block 102a The end of this pin has an oblique face which engages a cam 118 stationary on the housing and a spring 119 presses the pin outward towards the cam. Thus, while the slide 102 is stationary and the slide 101 is moving, the former 115 will travel in relation to the core or anvil 116 and also in relation to theguide 114, first shearing the portion of the wire projecting from said guide and then bending it around the anvil to form the staple. In shearing the wire the cut is oblique so as to form sharpened ends upon the staple for driving into the brush back.

The tuft inserter 120 lies between the slides 101 and 102 and also between the furcations ofthe former 115s This inserter is actuated from the slide 103 through the medium of a transversely extending blade 121 which passes through a longitudinal slot 122 in the slide 102. During the movement of the inserter 120 the slides 101 and 102 are also moving and lin the same direction, but by reason of the greater throw of the crank 7, the inserter will over-take the staple and will then drive it forward into the nozzle 123 and through the latter into the registering hole in the brush back.

The nozzle 123 is providedwith the vertical guide slot 124 therein, which is initiallyl in registration with the slot formed by the guides 59 and 60, so that kthe tuft conveyed downward by the needles will be deposited therein. Centrally through the nozzle is the recess 125, which at its forward end is of the proper size for the passage of the tuft, but which flares towards its rear end in a. horizontal plane to receive and bend the bristles.

In a central vertical plane there are formed grooved stoaple guides126, whichreceive the staple from between the furcations of the former` 115 and guide it in its continued movement to the end of the nozzle. 127 is the shield or deiector which is normally arranged front of the nozzle 123 and which is mounted upon the forward end of the slide 104. The lat-ter is actuated from the slide 102 through the medium of a pin 128 projecting into a recess 129 in said slide, and a spring-pressed plunger 130 in said recess normally holds the pin at the forward end thereof. This construction permits the slide 104 to move with the slide 102 until near the complethe bent tion ofthe forward movement when a laterally projecting lug 131 on the slide 104 strikes against a stop 132 in the housing and arrests Y.

further movement. The slide 102, however, continues to move forward which causes the nozzle 123 to press thek shield or deflector 127 laterally out of the way of the tuft and staple and at the same time, by the movement of said deiector, to clear the lpath of bristles from the previously set tuft. During the transfer of the staple and during the forward movement of the inserter, the core or anvil 116 must be withdrawn from the path and this is accomplished by the forward movement of the slide 102, withdrawing the end of the pin 117 from the cam 118, whereupon the spring 119 withdraws the core.

Wire feed unit.

The wire feedunit consists of a pair of feeding rolls 133 and 134 mounted on the frame ,below the wire guide 114. These rolls are geared together to operate in unison and are actuated by a pawl 135 carried by a slide 136 located in a guide-way in the frame beneath the housing 100. The slide 136 is yieldably vpressed forward .by a spring-pressed plunger'137 located in a recess in the frame and whichengages a pin 138 projecting laterally from theslide. In the opposite direction the slide is actuated by the slide 103 near the completion of the rearward movement thereof and by means of an upwardly extending fingerl39 extending into the path of said slide. An adjustable stop 140 engages a finwheel by a spring 142.

Drilling mechanism. The drilling mechanism for the brush backs is actuated by the cam 24 and consists of a revoluble drill spindle 143 ,having a drill chuck 144 at its forward end and a pulley 145, which -is preferably driven by a plurality of belts 146, thereby insuring continuous operation should one belt break. The spindle 143 is' mounted in a bushing 147 within a longitudinally movable plunger 148, which latter is mounted in a bearing 149 on the frame. The bushing 147 abuts at one end against the pulley and at its opposite end against a thrust collar 150, thereby communicating end thrust to the spindle while permitting the independent rotation thereof. The plunger 148 carries a roller 151 which contacts with the cam 24l and this roll is maintained in Contact with the cam by a spring the chuck 144 is a second bearing 154 for the spindle 143. The whole construction is one in which each cycle of the cam 24 will effect a longitudinal reciprocation of the spindle,

while rotary movement is imparted thereto bythe belts 146.

Work holders.

l the drilling chuck to the tuft setting chuck.

In' general construction these holders consist of chucks for correspondingly clamping the brush backs, which chucks are mounted on heads that are simultaneously and correspondingly adjusted in transverse directions to successivel register predetermined points in the brush blacks with the drill and nozzle. It is also necessary with certain types of brushes to change the angle of the bores so thatsome or all of the tufts are set obliquely.

This is provided for by imparting to the heads a simultaneosuly corresponding angular adjustment.

One diliculty which has been experienced with work holders of this type is that in the drilling of the. brush backs, where the holes are obli ue, there is a tendency for the drill to be de ected 'from its true position. Consequently, when the drilled back is transferred to the tuft setting chuck, itwill not correctly register with the nozzle and imperfect work is performed. One of the important features of my improvement is that provision is made for compensating for this deflection and for changing the amplitude of movement of the tu-ft setting work holder with respect to that of the boring work holder so as to secure perfect registration. Another important feature of my improvement is the simplification ofthe mechanism and the elimination of lost motion between the parts, thereby securing a very high degree of accuracy inthe performance of the work, as well as decreasing the cost of manufacture and repairs. In detail, the work holders are .mounted upon the frame above the shaft 20 and cams 22 and 23 thereon. Centrally between the boring and the tuft set-tmg mechanism is arranged a stationary vertical guldeway 155 containing a pairof reciprocating slides 156 and 157 'and upon the'lower ends and which carries at its opposite ends a pair of vertically extending rods 161 and 162. These rods pass through the hollow Shanks 163 of swivelledV heads 164 and 165, said shanks engaging anti-friction bearings 166 which take care of both radial and end thrust. The heads 165 have bifurcated upward extensions or cheek plates 167 which are arranged parallel to each other and equally spaced upon opposite sides of the axes of the rods 162. 168 are frames which are mounted for universal movement between the cheek plates 167 said frames having mounted on their outer ends the brush back holding chucks 169. Near the opposite ends of the frames 168 are pivot pins 170 which extend into guide-ways 171 in the cheek plates and are secured to sliding blocks 172 in said guide-ways. spring-pressed plungers bearing against the blocks 172 tomove the same in their guideways to carry the chucks away from the drilling and tui't setting mechanisms. 174 are thrust bars, preferably with a yoke connection 175, which bars are slidably secured in guide-ways in the cheek plates between said plates and the frame 168. The forward ends of the thrust bars 174 are rounded and engage pattern strips 176 which are secured to the rear of the chucks 169 on the opposite sides thereoi/ The yoke 175 carries a pattern 177,

173 are l which is arranged in the plane transverse to the planes of t-he patterns 17 6 and which bears against a roller thrust bearing 178 arranged in th?l central plane of the frame 168. The slide 156 is connected with a yoke 185, which embraces theOguide-way 155 and has mounted thereon the vertically extending helical racks 186, which engage helical segmental gears 187 mounted on the swivelled Shanks 163. l

With the construction as above described,- .any vertical movement imparted to the slide 156 willraise or lower the helical racks 186,'

which in turn will rotate the helical gears 187,y thereby imparting to the heads 165`and the mechanism carried thereby an oscillatory movement in the horizontal plane. other hand, any vertical movement imparted to the slide 157 will be transmitted through the yoke 160, rods 162, slotted heads 182, to the frames 168, causing an oscillatory movellO On the ment of the latter in a verticalplane about the pivots 170. By these two movements the chucks 169 may be simultaneously and correspondingly adjusted lto any predetermined positions of registration with respect to the drilling and tuft setting mechanisms, while, by reason of the rotation about the pivots 170 land 163, these chucks are also angularly adjusted and will change theangleof the face of the brush back with respect to the drilling and tuft setting mechanism. It is, however, necessary to impart a further movement to the chuck in order that the face of the brush back in the various positions of registration and angular adjustment thereof will be in the same spaced relation to the drilling mechanism or the tuft setting mechanism. This is accomplished by the patterns 176 and 177 in conjunction with the thrust bars 174 and the thrust bearing 178. By properly fashioning these patterns each adjustment of the chuck vertically, horizontally and angularly will accomplish a correspondingr adjustment of the frame 168 forwardly or rearwardly so as to maintain the proper relation of the brush back to the operating mechanism. The spring-pressed plungers 173 will always hold the frames 168 in Contact with the patterns and thrust bearing.

To compensate for the deflection of the drill, when boring angularly, the amplitude of movement of the chuck for the tuft setting 'mechanism should be less than that for the drilling mechanism. This is accomplished by merely slightly adjusting the thrust bearing 178, which, by enlarging or diminishingr the radial distances from the pivots 170 and 163 will correspondingly alter the length of movement.

The cams 22 and 23. which respectively control the slides 156 and 157, may be conveniently formed by manually setting the holders to successive positions of registration, according to the particular pattern desired and for marking the cam blanks in each of such adjustment positions. To facilitate this opera` tion I have provided at the upper ends of the slides 156 and 157 threaded sockets for engaging threaded shanks 188 which pass upward above the top of the guide 155 and engage wing nuts 189, as shown by dotted lines in Fig. 7. By screwing these nuts upward or downward on the shanks the slides 156 and 157 will bev raised or lowered, which will correspondingly' adjust the positions of the chucks. Cam blanks may moving the rollers 158 and 159-and substituting a ldrill or other marking device for operating vupon ,the cam blank. The blank thus marked can then be removed and cut to proper form, which will subsequently reproduce the original movement.

Uompete assembly.

slides. be marked by re` crank lever with the pitman 52. Therefore, this unit can be easily detached without disturbing other parts of the machine. The only connection between the bristle feeding mechanism and the other mechanism is through the link 7 which actuates the reciprocatory member 44 and the pin 89 which connectsthe pitman 52 with the slide 88. The tuft setting mechanism constitutes another independent unit, which may be completely assembled b v itself and then mounted upon the machine, its only attachment to the ot 1er mechanism being through the pins 89 and 105, whichare respectively connected with the pitmen 106 and The housing or guideway 100 of this unit is secured to the frame by bolts or screws 190, so that it may be quickly detached or exchanged for another similar unit. This is quite important, inasmuch as it is necessary to change the size of the staple for different sizes of tufts and while the tuft picking mechanism may be adjusted for a large variation in sizes of tufts, the tuft setting mechanism must be exchanged. lVith my construction this eX- change is easily and quickly accomplished and without disturbance of the adjustment of other parts of the machine.

The drilling mechanism is a 'unit whose only connection to the other mechanism is through the cam 24 and the work holding unit is also distinct from the .other units of the machine.

In the complete operation the bristle holder is first adjusted to receive bristles of the desired length by sliding the plates 30 and' 3l upon the shafts 26 and 27. The hinged cover 40 is then raised and the bristles inserted in the receptacle, the plunger 34 being first retracted and locked temporarily by the latch 39.- The size of the tuft is adjusted by adjusting the screw-threaded stops 56 and 57 and also by adjusting the eccentric 83 to raise or lower the pin 82 on which the member 44 The cams 23 and 24 having been properly formed by the method above described, or by any other method, and all other necessary adjustments having been made, the machine is ready for operation. Motion is imparted to the shaft 2 from the pulley 3 driven by the belt 5 whenever the motor 4 is started. There is also a brake for instantaneously stopping motion at the completion of the cycle and this is preferably in direct engagement with thepulley 3. Thus, as shown, said pulley is provided with a peripheral V-shaped oove 191 which is engaged by a correspon ing V-shaped brake shoe 192 yieldably pressed into engagement by the spring 193. 194 is a solenoid, the core 195 ofsvhieh is connected by the links 196 with a cam 197 for retracting the brake shoe. This solenoid is included in the motor circuit 198, so that whenever the motor is started, the brake will be released and, on the other hand, when the i motor is stopped, the brake will be instanta- 23 and 24, which actuates a cut-out switch 'simultanenously registered lVhen the motor is started, the shaft 2 'is revolved and-with each revolution will complete a small cycle, which accomplishes the following operations. The bristles are fed downward in the bristle holder and are compacted to uniform density in the wedgeshaped space adjacent to the picking needles. The picking needles are operated to separate a tuft of predetermined size and to carry the same downward between the guides 59 and 60 into the slot 124 of the nozzle. The wire is fed to the staple forming mechanism, is sheared to the proper length and is formed into a staple and this staple is then engaged with the tuft and With the latter isy carried through the nozzle. The work holders have corresponding points on two-brush backs with the drilling mechanism and the tuft setting mechanism andthe drilling mechanism drill/a hole in one back ,simultanenously with the insertion of the tuft and corresponding hole in the other. brush back.

By 'reason of the angular advance of the crank pin 9 with respect to the crank pin 7 ,-the nozzle will complete its forward movement and will start upon its returnmovement in advance of the completion ofthe forward movement of the insel-ter.

back during the v,instant Oftransfer of the ,tuft from the nozzle to the hole, but will retract the nozzle from such contact before the -final driving blow on the staple is given. This avoids injury to the tuft, which might otherwise occur if the nozzle were in close proximity to the back at suchvtime.-

What I claim as my invention is:

1. In abrush`machine, atuftpicking unit including a pair of cooperating rcciprocable tuft gathering members, a tuft setting unit including a reciprocable nogzle operable transversely) to said tuft gathering members, said tuft gathering members being arranged to directly deposit the tufts in said toggle, a frame on which said units are mounted, each of said units constituting a complete .assembly capable of independently performing its particular function anda common driving mechanism for operating sa1dvun1ts with a -substantially harmonic motion in timedrelation to each other.

2. In a brush machine, the combination of 1 a -bristle feeding unit, a tuftplckmg unlt` cooperating therewith to successively pick and deliver tufts, adjustment means for varying the size of the tufts, a removable tuft setis operated to staple into thel This results in v' holding the nozzle in contact with the brush,

ting unit adapted to operate on a tuft of predetermined size, anda common actuatingv ing means and an `inserter, and mechanism for operating said means in ti'med'relation, said tufty setting means being detachable from said machine `as a unit withoutinterference with or disassembly of said tuft formmg means.

y 4. In a brush machine, the combination with tuft setting means and tuft picking and delivery means, of mechanism for operating said parts by timed substantially harmonic movements comprising a rotating crank, a pitman connection between said crank and tuft setting means, and a bell crank connection between said pitman and said tuft picking and delivering mechanism. 5.' In a brush machine, the combination with tuft settingmechanism reciprocating in one plane and cooperating tuftpicking and delivering mechanism reciprocating in a transverse plane, of means for imparting to said mechanisms properly timed substantially harmonic movements comprising a rotating crank, a pitman connection between said crank and said tuft setting mechanism, and a -bell crank connection between said pitman and tuft picking and delivering mechanism. 6. Ina brush machine, the combination with tuft setting nfechanism including a re- -ciprocating nozzle and a differentially reciprocating driver, of tuft picjking and transferiring means reciprocating in a plane transverse to the plane of movement of sald noz-y zle and driver, and mechanism for imparting to said parts properlytimed substantially' harmonic cooperating movements compris ing a pair of' cranks of different throw,`p1t

man rods connecting said cranks respective- 1y` with said nozzle and driver, and a bell crank connection between the pitman for said driver and saidi'tuft picking andtransferrig means.

7. In a brush machine, the combination of a'tuft setting unit includinga reciprocable nozzle having a. tuft receiving opening.

therein, a reciprocable tuft transferring unit arranged t-o directly deposit a tuft in said opening, and mechanism for impartlng to each of said units a substantially harmonic movement in timed relation to the other, suchl that each of said units is in a low velocity portion of its harmonic cycle during the interval when the tuft is deposited by said .tuft transferring unit into said tuft setting unit. l

8,. In a brush machine, the comblnatlon with a reciprocable nozzle having a longitudinal passageway therethrough, and a transverse passageway intersecting therewith, of an inserter movable through said longitudinal passageway, a. reciprocable tuft picking an transferring unit arranged to directlydeposit a tuft in the transverse passageway of said nozzle, mechanism for imparting substantially harmonic movements of different amplitude and angular displacement to said nozzle and insert-er, and means for imparting a substantially harmonic movement to said tuft icking unitin timed relation, to said tu-ft setting unit.

9. In a brush machine, the combination with a tuft setting nozzle unit having a transverse tuft receiving slot therein, of a recipiocable tuft picking and transferring unit arranged to directly deposit a bristle tuft in said slot, a bristle feeding unit adjacent said tuft picking unit, said units being operable by substantially harmonic actuating movements, and a rotating shaft having eccentric connections with said units for imparting the harmonic movements thereto in properly timed relation.

10. In a brush machine, the combination of areciprocable tuft picking unit,- a tuft setnections being also connected to said reciprocable tuft picking unit, said eccentric connections being angularly oset with respect to each other and of different amplitude.

11. In a brush machine the combination with reciprocable tuft setting means and reciprocable tuftpicking and delivery means,

of mechanism for operating said means by timed substantially harmonic` movements comprising a rotating crank, a pitman connection between said crank and said tuft setting means, and means connecting said tuft setting means with said tuft picking an delivery means for transmitting the harmonic movement of the former to the latter in timed relation.

In testimony whereof I afiix my-signature.

CONRAD JOBST. 

